New Anisotropic Exact Solution in Multifield Cosmology

Abstract

In the case of two-scalar field cosmology and, specifically for the Chiral model, we determine an exact solution for the field equations with a anisotropic background space. The exact solution can describe anisotropic inflation with a Kantowski-Sachs geometry and it can be seen as the anisotropic analogue of the hyperbolic inflation. Finally, we investigate the evolution for the homogeneous perturbations around the new asymptotic solution.

arXiv comment12 pages, 1 figure, to appear in Universe

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Cited by in corpus (5)

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• Dynamical renormalization and universality in classical multifield cosmological models
• Multiscalar field cosmological model and possible solutions using Noether symmetry approach
• Anisotropic solutions for $R^2$ gravity model with a scalar field
• Anisotropic Spacetimes in Chiral Scalar Field Cosmology